The experts have offered advice, and studious Chad Henne is paying close attention. Bill Parcells told the Dolphins quarterback ``to really look at yourself in a detailed way,'' Henne said, ``and to keep improving -- the turnovers, the touch passes.'' Henne said Dan Marino has been ``guiding me on throwing catchable balls to the running backs and knowing who your receiver is to throw different balls. Dan is always saying, `When in doubt, `Let it fly!' ''

How determined is Henne to improve as he prepares to start an NFL season opener for the first time? He has watched nearly every throw he made last season to ``learn what you could have done differently.'' He has been studying tapes of the Colts' Peyton Manning and Chargers' Philip Rivers, eager to learn from ``offenses that created big plays. You study every quarterback and try to take one thing you like from them.''

The Dolphins saw plenty they liked from Henne, but want more. ``The greatest area we needed to see improvement in from Chad was the decision-making process and taking care of the football,'' coach Tony Sparano said Tuesday. ``The touch throws that are necessary in the middle of the field -- he has shown improvement in both those areas. His numbers are off the charts. On Sunday, he was 12 for 12 in practice.''

Sparano said he wants Henne -- who threw 12 touchdown passes and 14 interceptions in 14 games in 2009 -- to resist dangerous ``impulse throws, feeling like you have to do it all, or do it all on one play.''

Henne said he likes his progress: ``I'm getting the ball out a lot quicker. I'm anticipating some of the routes instead of burning it in there right away. I'm giving more arc on the ball.''

Said safety Yeremiah Bell: ``He looks a lot more confident because he knows he's the guy.''